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f05a4a42de
When unwinding stacks, we use unwind_consume_stack() to both find whether an object (e.g. a frame record) is on an accessible stack *and* to update the stack boundaries. This works fine today since we only care about one type of object which does not overlap other objects. In subsequent patches we'll want to check whether an object (e.g a frame record) is on the stack and follow this up by accessing a larger object containing the first (e.g. a pt_regs with an embedded frame record). To make that pattern easier to implement, this patch reworks unwind_find_next_stack() and unwind_consume_stack() so that the former can be used to check if an object is on any accessible stack, and the latter is purely used to update the stack boundaries. As unwind_find_next_stack() is modified to also check the stack currently being unwound, it is renamed to unwind_find_stack(). There should be no functional change as a result of this patch. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Mark Brown <broonie@kernel.org> Reviewed-by: Miroslav Benes <mbenes@suse.cz> Reviewed-by: Puranjay Mohan <puranjay12@gmail.com> Cc: Ard Biesheuvel <ardb@kernel.org> Cc: Josh Poimboeuf <jpoimboe@kernel.org> Cc: Kalesh Singh <kaleshsingh@google.com> Cc: Madhavan T. Venkataraman <madvenka@linux.microsoft.com> Cc: Marc Zyngier <maz@kernel.org> Cc: Will Deacon <will@kernel.org> Link: https://lore.kernel.org/r/20241017092538.1859841-10-mark.rutland@arm.com Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.